001    /*
002     $Id: GeneratorContext.java 3104 2005-11-13 16:42:14Z blackdrag $
003    
004     Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
005    
006     Redistribution and use of this software and associated documentation
007     ("Software"), with or without modification, are permitted provided
008     that the following conditions are met:
009    
010     1. Redistributions of source code must retain copyright
011        statements and notices.  Redistributions must also contain a
012        copy of this document.
013    
014     2. Redistributions in binary form must reproduce the
015        above copyright notice, this list of conditions and the
016        following disclaimer in the documentation and/or other
017        materials provided with the distribution.
018    
019     3. The name "groovy" must not be used to endorse or promote
020        products derived from this Software without prior written
021        permission of The Codehaus.  For written permission,
022        please contact info@codehaus.org.
023    
024     4. Products derived from this Software may not be called "groovy"
025        nor may "groovy" appear in their names without prior written
026        permission of The Codehaus. "groovy" is a registered
027        trademark of The Codehaus.
028    
029     5. Due credit should be given to The Codehaus -
030        http://groovy.codehaus.org/
031    
032     THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
033     ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
034     NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
035     FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
036     THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
037     INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
038     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
039     SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
040     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
041     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
042     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
043     OF THE POSSIBILITY OF SUCH DAMAGE.
044    
045     */
046    package org.codehaus.groovy.classgen;
047    
048    import org.codehaus.groovy.ast.ClassHelper;
049    import org.codehaus.groovy.ast.ClassNode;
050    import org.codehaus.groovy.ast.CompileUnit;
051    import org.codehaus.groovy.ast.MethodNode;
052    
053    
054    /**
055     * A context shared across generations of a class and its inner classes
056     * 
057     * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
058     * @version $Revision: 3104 $
059     */
060    public class GeneratorContext {
061    
062        private int innerClassIdx = 1;
063        private CompileUnit compileUnit;
064        
065        public GeneratorContext(CompileUnit compileUnit) {
066            this.compileUnit = compileUnit;
067        }
068    
069        public int getNextInnerClassIdx() {
070            return innerClassIdx++;
071        }
072        
073        public CompileUnit getCompileUnit() {
074            return compileUnit;
075        }
076    
077        public String getNextClosureInnerName(ClassNode owner, ClassNode enclosingClass, MethodNode enclosingMethod) {
078            String ownerShortName = owner.getNameWithoutPackage();
079            String classShortName = enclosingClass.getNameWithoutPackage();
080            if (classShortName.equals(ownerShortName)) {
081                classShortName = "";
082            }
083            else {
084                classShortName += "_";
085            }
086            // remove $
087            int dp = classShortName.lastIndexOf("$");
088            if (dp >= 0) {
089                classShortName = classShortName.substring(++dp);
090            }
091            // remove leading _
092            if (classShortName.startsWith("_")) {
093                classShortName = classShortName.substring(1);
094            }
095            String methodName = "";
096            if (enclosingMethod != null) {
097                methodName = enclosingMethod.getName() + "_";
098    
099                if (enclosingClass.isDerivedFrom(ClassHelper.CLOSURE_TYPE)) {
100                    methodName = "";
101                }
102                methodName = methodName.replace('<', '_');
103                methodName = methodName.replace('>', '_');
104            }
105            return "_" + classShortName + methodName + "closure" + getNextInnerClassIdx();
106        }
107    }